Latest questions in this category.
Green glands (also called antennal glands) in crustaceans help regulate salt and water balance.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Mammals are warm-blooded (endothermic), not cold-blooded (ectothermic).
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Amphibians have a three-chambered heart, consisting of two atria and one ventricle.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Arthropods are characterized by jointed appendages, which provide mobility and functionality.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Cyclostomes (e.g., lampreys and hagfish) lack paired fins, unlike most vertebrates.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Amphibians have a three-chambered heart with two atria and one ventricle.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Arthropods have an open circulatory system where the blood directly bathes organs in a hemocoel.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
All mammals have a four-chambered heart, which ensures complete separation of oxygenated and deoxygenated blood.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Arthropods do not have a water vascular system; this feature is found in echinoderms.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Limulus (King crab) belongs to phylum Arthropoda and is considered a living fossil.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Malpighian tubules are excretory structures in insects that help in the removal of metabolic waste.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
Spiders and scorpions (Arachnida) possess book lungs for respiration, which are made up of thin, leaf-like structures.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Arthropoda
